Patents by Inventor Richard R. Perdue

Richard R. Perdue has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Skin package
    Patent number: 3966045
    Abstract: A package having a single backing or support member with products skin packaged to opposite sides of said support member.
    Type: Grant
    Filed: May 12, 1975
    Date of Patent: June 29, 1976
    Assignee: W. R. Grace & Co.
    Inventor: Richard R. Perdue
  • Vacuum skin package, and process and apparatus for making same
    Patent number: RE30009
    Abstract: In the prior art, vacuum skin packaging processes are performed by placing the product to be packaged on an impervious backing board; placing the product and board in a vacuum chamber; positioning a sheet of thermoplastic film above the product and backing board in the chamber; evacuating the chamber; then, either pulling the film down over the product or pushing the product up into the film; and, thereafter sealing the film to the board. In the present invention, a portion of the film is drawn by differential air pressure against the concave interior surface of the upper portion of a vacuum chamber; the film is then heated by surface contact; and then, after evacuation of the chamber, air pressure is used to blow the film down over the product and against the backing board. Thus, in the present invention, the film is shaped in a concave fashion surrounding the upper portion of the product and it is not necessary for the product to move.
    Type: Grant
    Filed: January 25, 1978
    Date of Patent: May 29, 1979
    Assignee: W. R. Grace & Co.
    Inventors: Richard R. Perdue, Le Roy F. Hoagland, Richard O. Kuehne